Well, flashed a few of my own "tunes" today.
Messed with "spark" tables, lots of room for improvement there.
Messed with a few other engine tables too. Lots of room for improvement in a lot of areas.
Just a light haze of smoke with a few tweaks in fuel, timing and boost tables. Truck has noticeably more get up and go (seat of pants assesment only).
Lockup is super easy to control if you know where to look. Slowly learning the 4l80e program. I've messed with a few 4l60e's before, but I need to slow time it as I'm not as experienced tweaking transmissions.
I tweaked up just a bit much at one point and got second gear rubber.
Yipe!
No way is that any good shifting that hard on a 400,000 km trans! Back to the stock that parameter went, and right away too (sitting on the side of the road and uploading a new flash as soon as it hit second that hard).
No idea how any of it affects fuel mileage as I have a second PCM I'm swapping in and out for runs/flashes and I'm just playing around learning right now.
This is all with the truck empty, no towing.
Towing tune will come later, and probably mean another PCM to swap in and out.
I will say that being able to flash the PCM on the bench harness I built is the cats meow though.....
If only my "real time" tuning experiment works..........that will be cats ass!
Still waiting for a couple custom parts to show up and I need more money......need more money.................
